Subnets and VLANs
Posted on 2012-09-20
I'm don't understand subnets and VLANs 100%, so I need a little bit of help. In the example below, the only thing that changed is the subnet mask on my WIN 7 PC.
My computer had the static IP settings below:
IP address: 10.0.64.4
CAN ping anything in my own subnet/VLAN: DHCP scope=10.0.64.0, VLAN 640, range=10.0.64.3-14, router 10.0.64.1, subnet=255.255.255.240
CAN ping anything in: DHCP scope=10.0.24.0, VLAN 240, range=10.0.24.3 - 30, router = 10.0.24.1, subnet=255.255.255.224
CANNOT ping anything in: DHCP scope= 10.0.64.16, VLAN 642, range=10.0.64.19 - 30, router=10.0.64.17, subnet=255.255.255.240
CANNOT ping anything in: DHCP scope=10.0.64.32, VLAN 644, range=10.0.64.35-38, router=10.0.64.33, subnet=255.255.255.248
HOWEVER, when I changed my settings to allow DHCP to automatically get an IP, I had the settings below:
With these settings I was able to ping ALL subnets/VLANs. The only thing that changed is the subnet mask. Why am I now able to (all of sudden) ping all IPs.